20335275816 has 16 divisors (see below), whose sum is σ = 50838189600. Its totient is φ = 6778425264.

The previous prime is 20335275761. The next prime is 20335275827. The reversal of 20335275816 is 61857253302.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423651556 + ... + 423651603.

It is an arithmetic number, because the mean of its divisors is an integer number (3177386850).

Almost surely, 2^20335275816 is an apocalyptic number.

It is an amenable number.

20335275816 is an abundant number, since it is smaller than the sum of its proper divisors (30502913784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20335275816 is a wasteful number, since it uses less digits than its factorization.

20335275816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847303168 (or 847303164 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 20335275816 in words is "twenty billion, three hundred thirty-five million, two hundred seventy-five thousand, eight hundred sixteen".